Typing "id" on a terminal on my gnome desktop gives the following - but when I insert a dvd I get "not authorised to mount ..." in a popup. What more do I need to do?
BillK uid=1000(wdk) gid=100(users) groups=100(users),6(disk),10(wheel),18(audio),19(cdrom),80(cdrw),85(usb),411(plugdev),413(wdk),446(vmware),1000(vboxusers),1005(davfs2)